<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"  @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区 -->
      <el-table :data="userList" border stripe>
          <el-table-column label="#" type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态" prop="mg_state">
              <!-- 域名插槽 -->
              <template slot-scope="scope">
                <!-- {{ scope.row.mg_state }} -->
                <el-switch
                    v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                </el-switch>
              </template>
          </el-table-column>
          <el-table-column label="操作" width="180px">
              <template slot-scope="scope">
                  <!-- 修改按钮 -->
                  <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                  <!-- 删除按钮 -->
                  <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                  <!-- 分配角色按钮 -->
                  <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)">
                    </el-button>
                  </el-tooltip>
              </template>
          </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
      </el-pagination>
    </el-card>
  <!-- 添加用户的对话框 -->
  <el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%" @close="addDialogClosed">
    <!-- 内容主体区域 -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
      <el-form-item label="用户名" prop="username">
        <el-input v-model="addForm.username"></el-input>
      </el-form-item>
      <el-form-item label="密码" prop="password">
        <el-input v-model="addForm.password"></el-input>
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="addForm.email"></el-input>
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="addForm.mobile"></el-input>
      </el-form-item>
    </el-form>
    <!-- 底部区域 -->
    <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
  </el-dialog>
  <!-- 编辑用户的对话框 -->
  <el-dialog
  title="修改用户"
  :visible.sync="editDialogVisible"
  width="50%" @close="editDialogClosed">
    <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
      <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email"></el-input>
      </el-form-item>
      <el-form-item label="手机"  prop="mobile">
        <el-input v-model="editForm.mobile"></el-input>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="editDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
  </el-dialog>

  <!-- 分配角色的对话框 -->
  <el-dialog
    title="分配角色"
    :visible.sync="setRoleDialogVisible"
    width="50%" @close="setRoleDialogClosed">
    <div>
      <p>当前的用户：{{ userInfo.username }}</p>
      <p>当前的角色：{{ userInfo.role_name }}</p>
      <p>分配新角色：
        <el-select v-model="selectedRoleId" placeholder="请选择">
        <el-option
          v-for="item in rolesList"
          :key="item.id"
          :label="item.roleName"
          :value="item.id">
        </el-option>
      </el-select>
      </p>
    </div>
    <span slot="footer" class="dialog-footer">
      <el-button @click="setRoleDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
    </span>
  </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }
    // 验证手机的规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' }, { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 当前需要被分配角色的用户
      userInfo: {},
      // 所有的角色列表
      rolesList: [],
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听 pageSize 改变的事件
    handleSizeChange(newSize) {
      //   console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 当前页码值 改变的事件
    handleCurrentChange(newPage) {
      //   console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = false
        return this.$message.error(res.meta.msg)
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) { return false }
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新刷新用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      // console.log(id)
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败！')
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) { return false }
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败！')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据ID删除对应的用户信息
    async removeUserById (id) {
      // 弹窗询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }).catch(
        err => err)
      // .then( () => { this.$message({ type: 'success', message: '删除成功!' }) }).catch(() => { this.$message({ type: 'info', message: '已取消删除' }) })
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消删除，则返回值为字符串 cancel
      if (confirmResult !== 'confirm') { return this.$message.info('已取消删除') }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('分配用户角色失败！')
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
